I never said that and of course that's not the case.
However, changing methods is not the same as changing the supervisor, even in medical sciences. Part of the PhD learning process is to work with your supervisor even if things are not going smoothly. You cannot expect that all experiments work out properly so if you leave because of the first difficulties you will never get a PhD.
I don't care anyhow-it's not me who is falling in that trap.
Just go on (all of you) with your loser/complain about supervisor and hard life mentality but don't pretend that you know how reality is.
I'm out of this crappy forum anyway - goodbye and goodluck with your 20 attempts to get a PhD